60127-16-4

Upstream product

• 55532-28-0 Triphenyl-o-nitrophenyl-arsonium 
• 642-31-9 9-anthracene aldehyde 
• 33895-18-0 anthracen-9-ylmethyltriphenylphosphonium bromide 
• 552-89-6 2-nitro-benzaldehyde 
• 3958-60-9 2-nitrophenylmethyl bromide 
• 2417-77-8 9-bromoethylanthracene 

Relevant academic research and scientific papers

A Stereoselective Synthesis of Olefins by a New Semi-stabilized Phosphonium Ylide

A new semi-stabilized phosphonium ylide, viz. (9-anthrylmethylene)triphenylphosphorane (2) generated by the action of sodium hydride or sodamide in benzene or sodium methoxide in methanol on (9-anthrylmethyl)triphenylphosphonium bromide (1), has been reacted with substituted aromatic aldehydes (3) to give exclusively the trans-1-(9-anthryl)-2-substituted-arylethylenes (4).The variation of solvents and bases has no effect on the stereoselectivity of the reaction.The trans-geometry of 4 has been established by IR and PMR spectral data.

Effect of Bulky Size of Carbonyl Systems on Betaine Decomposition of Semi-stablized Arsonium Ylids

Reactions of substituted benzylidentriphenylarsenanes (2a-i) with 9-anthraldehyde and 9-fluorenone have been studied using benzene-sodamide, chloroform-sodium hydride and methanol-sodium ethoxide as solvent-base pairs.In all the cases olefins (5a-i and 6a-i) are formed exclusively.Variation of solvents and bases has no effect on the course of betaine decomposition formed by the nucleophilic attack of ylids on carbonyl systems.